<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>wechat4j test</title>
</head>
<body>
  hello wechat4j test<br>
  <form method="GET" action="index.htm">
      <button type="submit" id="submit" name="op" value="1">主动发送消息</button>
  </form>
</body>
</html>